1. Department of Medical Statistics University Medical Center Göttingen Göttingen Germany
2. Department of Medical Biometry Institute for Quality and Efficiency in Health Care (IQWiG) Köln Germany
3. Centre for Reviews and Dissemination University of York York UK
4. Department of Biostatistics and Center for Evidence Synthesis in Health Brown University School of Public Health Providence Rhode Island USA
5. Statistical Methodology, Development Novartis Pharma AG Basel Switzerland
6. Advanced Exploratory Analytics Novartis Pharma AG Basel Switzerland